Working Principle
Opening Procedure
At the beginning of the rotation, the valve plate starts to separate from the seat. Once it rotates to an angle between 15° and 20°, the valve plate no longer makes contact with the seat. This mechanism significantly minimizes the frictional resistance during the opening process.
Closing Procedure
As the valve plate rotates towards the closed position, the eccentric structure comes into play. It generates a "wedge - like compression force", which effectively strengthens the sealing performance of the valve.
Torque Optimization
The double - eccentric design offers remarkable torque - reducing benefits. In comparison with single - eccentric butterfly valves, it can cut down the operating torque by 30% to 50%. This not only lessens the workload on the actuator but also extends its service life.
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